<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 信息主题区域 -->
			<view class="goods-info-body">
				<!-- 商品名称 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 收藏 -->
				<view class="favi">
					 <uni-icons type="star" size="18" color="gray"></uni-icons>
					 <text>收藏</text>
				</view>
			</view>
			 <!-- 运费 -->
			  <view class="yf">快递：免运费 </view>
			  <!-- 商品详情信息 -->
			  <rich-text :nodes="goods_info.goods_introduce"></rich-text>
			  <!-- 商品导航组件 -->
			  <view class="goods_nav">
			    <!-- fill 控制右侧按钮的样式 -->
			    <!-- options 左侧按钮的配置项 -->
			    <!-- buttonGroup 右侧按钮的配置项 -->
			    <!-- click 左侧按钮的点击事件处理函数 -->
			    <!-- buttonClick 右侧按钮的点击事件处理函数 -->
			    <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
			  </view>
		</view>
		
	</view>
</template>

<script>
	import { mapState } from 'vuex'
	
	import { mapMutations } from 'vuex'
	
	import { mapGetters } from 'vuex'
	export default {
		watch:{
			 // 1. 监听 total 值的变化，通过第一个形参得到变化后的新值
			total:{
			// handler 属性用来定义侦听器的 function 处理函数
			handler (newVal){
				// 2. 通过数组的 find() 方法，找到购物车按钮的配置对象
				const findResult = this.options.find(x => x.text === '购物车')
				
				if(findResult){
					findResult.info = newVal
				}
			},
			immediate: true,
			}
		},
		computed:{
			 // 2. 挂载购物车的 vuex 模块，模块内成员的访问路径被调整为 m_cart，例如：
			    //    购物车模块中 cart 数组的访问路径是 m_cart/cart
			...mapState('m_cart',[]),
			...mapGetters('m_cart',['total'])
		},
		data() {
			return {
				goods_info: {},
				// 左侧按钮组的配置对象
				options :[
					{
						icon: 'headphones',
						text: '客服'
					},
					
					{
					icon: 'shop',
					text: '店铺',
					
				},{
					icon:'cart',
					text:'购物车',
					info:0
					}
				],
				// 右侧按钮组的配置对象
				buttonGroup: [{
					text: '加入购物车',
					backgroundColor: '#ff0000',
					color:'#fff'
				},{
					text:'立即购买',
					backgroundColor:'#ffa200',
					color: '#fff'
				}
				]
				
			}
		},
		
		onLoad(options) {
			const goods_id = options.goods_id
			this.getGoodsDetails(goods_id)
		},
		methods: {
			...mapMutations('m_cart',['addToCart']),
			
			  async getGoodsDetails(goods_id){
				 const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id })
				   console.log(res)
					if (res.meta.status !== 200) return uni.$showMsg()
				    res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
					// 为 data 中的数据赋值
				    this.goods_info = res.message
			},
			preview(i){
				uni.previewImage({
					current:i,
					urls: this.goods_info.pics.map(x => x.pics_big)
				})
			},
			onClick(e){
				console.log(e)
				if(e.content.text === '购物车'){
					uni.switchTab({
						url: '/pages/cart/cart'
					})
				}
			},
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					const goods = {
						goods_id: this.goods_info.goods_id,//商品id
						goods_name: this.goods_info.goods_name,   // 商品的名称
						goods_price: this.goods_info.goods_price, // 商品的价格
						goods_count: 1,                           // 商品的数量
						goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
						goods_state: true                         // 商品的勾选状态
					}
					this.addToCart(goods)
					
			}
			
		}
	},
	}
</script>

<style lang="scss">
 swiper {
   height: 750rpx;
 
   image {
     width: 100%;
     height: 100%;
   }
 }
 .goods-info-box{
	 padding: 10px;
	 padding-right: 0;
	 .price{
		 color: #c00000;
		 font-size: 18px;
		 margin: 10px 0;
	 }
	 .goods-info-body{
		 display: flex;
		 justify-content: center;
		 .goods-name{
			 font-size: 13px;
			 margin-right: 10px;
		 }
		 .favi{
			 width: 120px;
			 font-size: 12px;
			 display: flex;
			 flex-direction: column;
			 align-items: center;
			 justify-content: center;
			 border-left: 1px solid #efefef;
			 color: gray;
		 }
	 }
	 .yf{
		  margin: 10px 0;
		  font-size: 12px;
		  color: gray;
	 }
	 .goods-detail-container {
	   // 给页面外层的容器，添加 50px 的内padding，
	   // 防止页面内容被底部的商品导航组件遮盖
	   padding-bottom: 50px;
	 }
    .goods-detail-container{
		padding-bottom: 50px;
	}
	 .goods_nav {
	   // 为商品导航组件添加固定定位
	   position: fixed;
	   bottom: 0;
	   left: 0;
	   width: 100%;
	 }
 }
</style>
